• Open Menu Close Menu
  • Apple
  • Shopping Bag
  • Apple
  • Mac
  • iPad
  • iPhone
  • Watch
  • TV
  • Music
  • Support
  • Search apple.com
  • Shopping Bag

Lists

Open Menu Close Menu
  • Terms and Conditions
  • Lists hosted on this site
  • Email the Postmaster
  • Tips for posting to public mailing lists
Re: MacBook pro : bug in the internal audio driver ?
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: MacBook pro : bug in the internal audio driver ?


  • Subject: Re: MacBook pro : bug in the internal audio driver ?
  • From: Thomas Strathmann <email@hidden>
  • Date: Wed, 29 Sep 2010 16:50:01 +0200

On 9/29/10 16:29 , Stéphane Letz wrote:

Le 29 sept. 2010 à 16:24, Doug Wyatt a écrit :


On Sep 29, 2010, at 0:18 , Stéphane Letz wrote:

Hi,

I see strange behaviour of the internal audio driver on a MacBook pro OSX 10.6.4. We have audio test applications that probably produce "non-correc"t samples that cause the driver to mis-behave. Applications cannot play anymore, the machine issues "pop" when starting/stopping an audio application and the only way to get normal behaviour is to restart the machine.

Is this a known problem? Could it be an issue with speaker protection code that is part of the driver on MacPro?

Hi,

The symptoms are what I'd expect if some of the samples being output are NaN's. Sometimes they can stay around indefinitely once introduced into a signal chain.

Arguably the driver ought to be resilient to them, but maybe there is a simpler solution in your test applications?

Doug

Possibly... but having to restart the machine is not the best option. So are you CoreAudio guys going to fix that?

I have experienced the same problem, but did not have to restart the machine. IIRC unplugging the speaker cable and the plugging it back in fixed the issue.


	Thomas
_______________________________________________
Do not post admin requests to the list. They will be ignored.
Coreaudio-api mailing list      (email@hidden)
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden


  • Follow-Ups:
    • Re: MacBook pro : bug in the internal audio driver ?
      • From: Jan Marguc <email@hidden>
References: 
 >MacBook pro : bug in the internal audio driver ? (From: Stéphane Letz <email@hidden>)
 >Re: MacBook pro : bug in the internal audio driver ? (From: Doug Wyatt <email@hidden>)
 >Re: MacBook pro : bug in the internal audio driver ? (From: Stéphane Letz <email@hidden>)

  • Prev by Date: Re: MacBook pro : bug in the internal audio driver ?
  • Next by Date: Re: MacBook pro : bug in the internal audio driver ?
  • Previous by thread: Re: MacBook pro : bug in the internal audio driver ?
  • Next by thread: Re: MacBook pro : bug in the internal audio driver ?
  • Index(es):
    • Date
    • Thread